We are one of the first major multi-brand hospitality companies to make sustainability measurement a brand standard, equal in importance to quality, service and revenue. We require measurement and corrective action from all of our brands as well as performance toward sustainability goals. Development of our sustainability tracking tool began in 2002 for our largest properties; and we now require each of our properties, whether owned, managed or franchised, to use LightStay to measure sustainability performance. Through LightStay, Hilton Worldwide is able to calculate and analyze the company’s aggregate sustainability performance across more than 200 indicators. It measures multiple utility and operational metrics such as energy, water, carbon, paper product usage, waste, chemical storage, air quality and transportation.